walker



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, o. W. WALKER. TYPE WRITING MAGHINE.

N6. 566,645. Patented sept. 29, 1896.

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C. W. WALKER. TYPE WRITINGr MACHINE.

N0. 568,645. Patented Sept. 29, 1896.

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A c W WALKER v TYPE WRITING MACHINE. No. 568,645.

Patented sept. 29, 1896.

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me, My MOWM'MM@ :Rs cc. PHmaLrrH NITED l' STATES ril-Emp Ernten.

CHARLES WV. WALKER,`OF BRIDGEPORT,CONNECTICUT, ASSIGNOR TO THE YOSTl/VRITING MACHINE COMPANY, OF NEV YORK, N. Y.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 568,645, datedSeptember 29, 1896. Application tiled September 25, 1894. Serial No.524,072. (No model.)

To @ZZ whom, t may concern:

Be it known that I, CHARLES W. WALKER, a citizen of the United States,and a resident of Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inType-Writing Machines, of which the following is a specification.

My present invention has for its objects io more particularly toimprovethe constructions of machinesA made the subjects of applicationsiiled by me August 2, 1894, Serial No. 519,231, and September 14, 1894,Serial No. 522,976; and it consists in the various features ofconstruction and combinations of devices hereinafter more fullydescribed, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a partial top plan view of aYost type-writing machine embodying my several improvements, thekeyboard and various other parts not essential to show being omittedfor'the sake of clearness. Fig. 2 isa top plan view of 2 5 the carriageand its attachments, showin gals'o the rear portion of theplaten-carrier partly in section and in its turned-up position,illustrated also at Fig. 4. Fig. 3 is a left-hand side elevation of themachine shown at Fig. 3o 1. Fig. 4L is a similar view with the platencarrier or frame turned up either for inspection of the work or fordetachment. Fig.' 5 is a vertical section taken at the line .e z' ofFig. 1. Fig. 6 is a perspective view of the antifriction-ball connector.Fig. 7 is a detail side elevation of the inner end of the releasekeylever. Fig. 8 is a top plan View of the dog-holder, the dogs, and theswitch for obtaining either single or double spacing. Fig. 9 is avertical section taken at the line y y of Fig. 2. Fig. 10 is aperspective view of the carriage and platen-carrier and theiraccessories. Fig. ll is a vertical section taken at the line :c 0c ofFig. 1. Fig. 12 is a perspective View of one of the feed-teeth, and Fig.13 is a like view of one of the column-stop teeth. In the various viewsthe same parts will be found designated by the same numerals ofreference.

I have shown my .improvements emboded `and near the ends or corners risetwo brackets G, which support, horizontally, two guide- 6o bars 7 and 8,attached to said brackets by screws 9. The said guide-bars are parallelwith each other and are separated to accommodate an intermediate bar,frame, or carriage 10. The inner side of the rear guidebar is providedwith a V-groove 11, extending its whole length, and the inner side ofthe front guide-bar is provided with a V-groove 12, likewise extendingthe full length of the bar.

The rear side of the frame or carriage is 7o formed or provided with alongitudinal V- groove 13 to associate with the groove 1l, and the frontside of said frame or carriage is formed with a longitudinal groove 14Eto associate with the groove 12. The said grooves 11 75 and 13 formbearings for two antifriction-balls 15, and the grooves 12 and 14 formbearings for a single antifriction-ball 16. The antifriction-balls 15are arranged apart several inches and are maintained in thisrelationship by a 8o Athin yoke or coupling-bar 17 havin g near each enda hole 18, and in which one of said balls is housed in such a mannerthat the ball protrndes on each side beyond said bar and takes a properbearing in the V-grooves 1l and 18. 85 The bar 17 is provided with anarm 19, which is bent or shaped to extend over to the antifriction-ball16 and seize or partially inclose the same by means a notch or cut-away20, formed at its front end. This arm 19 is located about midway of thebar 17, and, 'forming a part thereof, operates to hold the singleantifriction-ball 16 always in a fixed position relatively to theantifriction-balls 15, thus forming three extended points of bearing for95 the frame orcarriage 1t),y the said antifrictionball 16 projecting oneach side beyond its housing and bearing properly in the V-grooves 12and 14, all as clearly shown inthe various views. Between the guide-barsandthe frame Ioo or carriage are spaces sufficiently wide to accommodatethe bar 17 and the vertical portions of the arm 19.

For the purpose of maintaining the antifriction-balls in properrelationship to the frame or carriage, means are provided to engage atcertain times with some part of the ballsholder 17 l) to automaticallyad]- ust the same relatively to the carriage. In the eze cursions of thecarriage, by momentum, vibration, or from other cause, the balls maytravel slightly faster or slower than the carriage, thus effecting achange in the relative position of the balls and carriage, which shouldbe corrected las soon as possible. To

this end lugs or abutments are employed, and

these devices may either be connected to the carriage or may be attachedto a lixed part of the machine, as, for instance, one of the guidebars-Both forms et lugs orabntinents are shown, the carriage or movable lugsor abutments being designated by 21 and the stationary lugs or abutmentsby 22. Although I have shown the said two forms of lugs or abutments, itis of course not necessary for both to be employed at the saine time;yet they may be so used without detrimeiit to the action ot the machine.

The lugs or abutments 2l project upwardly from a horizontal bar 23,whose main function is to maintain in a normally-depresscd condition theline or series of individual feedteeth hereinafter more fully described,and said bar is bifurcated at its ends, as shown at 2i, to embrace ears25, rising from a feedrack 2G, mortised or set into the frame orcarriage 10 and secured in place by screws 27, whereby said bar is heldlaterally and lon gitudinally in proper position with reference to thefeed-rack, while at the same time it is free to rise and fall slightlyduring the ascent and descent of the independent feed-teeth. The saidbar 23 is elastieally connected to the said ears at each end by a lightwire spring` 2S, which at one end is attached tothe lugor abutment 21and at its other end to the ear Q5, all in a manner such that the saidsprings tend to keep the bar down and the feed-teeth thereunder in theirlowermost or normal po sitions, whereby they may be successivelyproperly presented to the spacing-dogs during the step-by-step movementsof the carriage. The lugs or abutments 21 are of such a height that theymay contact with the edges of the horizontal portion of the arm 19 ofthe ball-holder, and hence if, during a movement ot the carriage towardthe left, the ball-holder should travel too far in the same direction,the lug or abutment 21 on the left (considered from the front of themachine) will, on the return movement of the carriage for the beginninget a new line, strike against the lefthand edge ot' the arm 19 and causethe ballholder to travel with the carriage to the end of itsmovement,thus restoring the ball-holder to its proper positionrelatively to the carriage. In like manner, should the ball-holder loseits proper position with relation to the carriage during its movementtoward the lett by reason of a lagging action, the lug 21 on theright-hand side of the carriage will come in contact with the edge otthe arm 19 and drive the ball-holder along with the carriage during theremainder of the travel of the latter. The lug 21 on the leftliand sideis, however, the more important one, inasmuch as the tendcneyof theballfholdcr is te go too far to the left, and said lug operates toreturn the ball-holder and the antilrietioirballs carried thereby to theright and to their correct positions on the return movement of thecarriage for the commencement of a new line; but the right-hand lug 2l,like the left-hand lug, performs the important function of preventingthe ball-holder from accidentally detaching from the machine, and thusinsuring the maintenance ot the balls in their grooves or bearings.

The lugs or abutments 22 are fast on the rear guide-bar and, projectinginwardly in the path of the rear vertical member of the arm 19, limitthe movements of the ball-holder in both directions of travel of thecarriage, thus insuring the proper relationship of the ball-holder tothe carriage and preventing the escape of the balls from their groovesor bearin The travel of the carriage in its movements toward the left islimited by a screw 29, projecting from the under side ofthe carriage,and which contacts with the left-hand standard or bracket (i, while thetravel ot the earriage toward the right is limited by another screw 30,also projecting from the under side of the carriage and adapted tocontact with the right-hand bracket or standard (5.

The teeth 31 of the fccdrack are arranged in guiding-slots 32, eutvertically and transversely in the rack-bar, so that each tooth mayslide up and down independently of the remainin g teeth. Each feed-toothcomprises a body portion lateral shoulders 34.-, downward projections35, and an intermediate space or cut-away 3G. The shoulders rest uponuncut portions oi the rack-bar and prevent the tooth from fallingtherethrough, the rack-bar being slotted centrally and longitudinally'for nearly its whole length, and the carriage 10 being likewise slottedcoincidentally with said rack-bar for the accommodation et the bodyportions and depending projections of the series of feed-teeth, thel1old ing-dog 37, and the feeding-dog 38. r1he holdingdog is madeintegralwith a fixed bar 39, which is fastened by screws to thebranching members 4:0 ot' an arm ttl, secured to the back of the topplate and carrying at its inner end a type-guide 42. The upper end ot'the holding-dog stands always in front oi the body 33 of one of theteeth in the normal position of the latter, so as to intercept the sameand hold the carriage against the pull of the IOO IIO

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usual spring driving-drum, (not shoWn,) to which the carriage isconnected by a cord or chain 43. Y

The feeding-dog 38 is composed preferably of two side plates 44 and anangular connecting-plate 45, and said side plates embrace the rigid dogand the supporting-bar 39, from which it rises. The feeding-dog has anupand-down movement and also a lateral movement, the former beingeffected through a rod 46, which is connected at its lower end to theprinting and spacing mechanisms, and the latter (in one direction)through a coiled spring 47 and (in the opposite direction) through therack-teeth in moving under the influence of the spring-drum. The upperend of the feeding-dog when moving upwardly engages the bottom edges ofthe projections 35 of the tooth and, lifting said tooth, frees it fromthe retaining action of the holding-dog 37 by raising the body 33 of thetooth above the point of the holding-dog, whereby said tooth, under thepull of the spring-drum, may pass by the holding-dog, thus enabling thecarriage to feed one tooth orletter space. The carriage is preventedfrom moving farther at this time by reason of the fact that the nextsucceeding tooth is down and its body portion strikes against the faceof the holding-dog. When the feeding-dogis pulled down, the spring 47pulls it toward the right, (viewed from the front of the machine,) andthis lateral movement of the dog is limited by either of two pairs ofstops 48 or 49, formed on the inner end of a lever or plate 50, pivotedat 5l upon the bar 39, and having a handle by which either of the stopsmay be shifted into working position, the vibratory movements of theswitch-plate 50 being restricted by a screw and slot, as shown at 52.The upward movement of the feeding-dog is limited by a projection 53,which strikes` against a vertical screw 54, extending through thesupportingbar 39.

At Fig. 4 the feeding-dog is shown in its uppermost position, and theparts are drawn in their normal positions or to represent a feedingmovement as having just occurred. Vhen the finger-key or space-key isactuated, the feeding-dog is drawn down from in front of the legs orprojections 35l of the tooth obstructed by the holding-dog, and as soonas it is carried below the plane of the said legs or projections it isdrawn toward the right by the spring 47 against the stops 48, which maynow be supposed to be in working position. At this moment there is nofeed of the carriage. When, however, the finger-key or space-key isreleased, the top of the feedingdog lifts the feeding-tooth nowrestrained by the holding-dog, so that the cut-away 36 alines with thetop of the holding-dog, and thereby the feed of the carriage takesplace. During this feeding movement the legs of the next succeedingtooth strike the face of the feeding-dog and carry it back to its normalposition in alinement with the face of the holding-dog, which, asexplained, is struck'by the body of said oncoming tooth. In the normalposition of the dogs the body of the tooth bears against the face of theholding-dog and the legs of the tooth against the face of thefeeding-dog.

When the tooth is lifted by the feedingdog, its upper edge bears againstthe under side of the pressure-bar 23 and lifts it slightly, and whenthe feedingdog descends the tooth so lifted will be caused to returnsimultaneously by the downward pressure of the springs 28 of saidpressure-bar. Thus the series of teeth are maintained always in properworking relationship to the spacing-dogs and at the same time areprevented from accidental detachment either in the transportation of themachine or in the use thereof. If it should be desired at any time toremove one or more of the teeth for any purpose, the pressure andconfining bar may be readily detached.

For the purpose of releasing the rack from the spacing-dogs for rapidmovements of the carriage in either direction, a release-bar 55,supported by obliquely-disposed hangers 56, is arranged with its upperedge to occupy the continuous slot formed bythe cut-aways 36 of theseries of teeth and in a manner such that when said bar is lifted all ofthe teeth may be simultaneously raised thereby and to a height such asto carry the legs of all the teeth above the top of the feeding-dog andthe bodies of all of said teeth above the top of the holdin g-dog, whichlatter is slotted vertically for the accommodation of the releasebar, asshown more particularly at Figs. 5 and 1l.

The left-hand end of the release-bar is connected by a vertical link 57to a horizontal arm 58, projecting outwardly from a sleeve 59, mountedupon a pivot 60, supported in bearings in ears 6l, rising froma stand62, se-

cured to the carriage, the said sleeve being adj ustably attached tosaid pivot by a screw 63, passing therethrough and binding at its pointupon the surface of said pivot, which latter is provided with anintegral forwardlyextending bent arm 64, terminating at its front end ina pin orpivot 65, arranged at right angles to the pivot 60. The sleeveis made rotatively adjustable upon thek pivot 60, in order that theangular position of the arm 58 may be changed if needed and thereleasebar adjusted to lift the series of feed-teeth at the proper timeand to the required extent.

The pin or pivot 65 passes through a head or block 66 on the rear end ofa key-lever 67, pivoted vertically at 68 in a bracket 69, attached tothe left-hand end bar 70 of the platen-carrier, and which lever has alsoa coiled returning-spring 7l.

rlhe block is formed at its rearside with a horizontal slot orpassage-Way 72 and with seats 73 and 74 for the pin or pivot 65, whichat its inner free end is formed witha head 75, which bears against theinner side or face IOO IIO

of the block, and which is of such a diameter or size as to prevent itfrom passing through the openings in said block and thereby cause saidhead or block to form a shoulder or means for the block to bear against,whereby, when the finger-lever 7l is released, the arm Gt and theconnections back to the releasebar are caused to ret-urn with saidlinger-lever to their normal positions. The purposes of the slot andseats in the block will presently appear.

Upon the carriage l0, near each end, is screwed an arm 76, which at itsforward end is formed or provided with an open hook 77, the throat ofwhich is vertically disposed. lVithin these hooks rest the back rod 7 Sof the platen carrier or frame, thus providing a hinge-joint for thelatter whereby it may be turned up to a vertical position for inspectionor correction of the work. Upon said back rod 7 S are affixed collars 79 to prevent any independent endwise movement ofthe platencarrier, andfor the purpose of preventing any accidental detachment of said carrierfrom the hooks there are provided two keepers SO, one at each hook, andconsisting of a plate, pivoted at Sl upon the arm 7G, and adownwardly-projecting iinger 2, which enters the throat of the hook andterminates at about the surface of the hinge-rod 7 8. When, however, itmay be desired for any purpose, as for cleaning the types or repairingthe machine, to detach the platen-carrier, this may he readilyaccomplished by swinging the keepers about their pivots, as illustratedat Fig. 2, thus removing the obstructing fingers from the hooks, but theplaten-carrier cannet be detached until it is turned up to a verticalposition on account of the release-key mechanism, and for the purpose ofenabling' such detachment to be effected the slot or passage-way 72 isformed in the block of the release-key lever. In the down or workingposition of the platen-carrier the pin 65 occupies the seat 7 3 at theback of the passage-way 72, and is arranged axially of the hinge-rod 7Sof the platen-carrier, so that when the platencarrier is turned upto avertical position the bloei; turns or pivots about the pin G5, whichremains in its seat. lVh en the platen-carrier is turned up to avertical position or through an are of about ninety degrees, thenormally horizontal passage-way is turned down to a similar extent or tea vertical position, and into the plane of the throats of the hooks, asshown at Figs. 2 and a, and in this position of the parts, theobstructing fingers having been swung aside, the platen-carrier may bereadily detached from the machine, the hingerod passing up out of thehooks and the block slipping up past the pin G5. \Vhen it may 4bedesired to replace the carriage, the reverse of this operation is ofcourse performed.

In the carriage-releasing operation, when the forward linger end of thekey-lever G7 is pushed toward the end bar of the platencarrier to raisethe release-bar, the outer side of the block bears against the verticalportion of the arin (il and causes it to rock, turn the pivot GO, liftthe arm 5S, and, through the link 57, elevate the release-bar, and inorder to permit this rocking and rising action of the dependingcrank-arm G4: the block is eut away or slotted obliquely from the seat73 to the seat 74C, so that the pin may pass from the seat or slot 7 3to 74, and when the finger-lever is released the pin passes down againte its seat 73 as the remaining parts return to their normal positions.

The platen 83 is mounted to rotate as usual in the frame or carrier andis provided with a pressure-roller 8l, which is supported by the usualsprii'lg-pressed hangers 85, mounted on the back rod 7 8, the forwardends of the hangers supporting a longitudinal scale or pressure bar SGand also circumferential paper-guides S7, one near each end of theplaten.

On the front round rod of the platen-carrier is mounted a supplementaladjustable paper or envelop guide 88, which is preferably attached by ascrew to a sleeve fhadapted to slide on said rod. In order to preventsaid paper or envelop guide from dropping or turning down independently,a rod Si() is attached to and arranged beneath the front rod of theplaten-carrier for the guide SS to bear upon.

For the performance of column or tabular work any one or more of thefeed-teeth may be formed or provided with a slot 0l about centrally ofthe body portion, as shown at Fig. 13, so that when the release-bar islifted it will pass up into said slot and fail to raise such tooth,whereby when the tooth reaches the holding-dog it will contact therewithand arrest the movement of the carriage. For eX- ample, one suchcolumn-tooth 92 may occupy the fifteenth position and another thesixtieth place on the rack. In doing billwork, for instance, the datemay iirst be written and then the release-key operated and the carriagecaused to move quickly until the fifteenth tooth strikes against theholding-dog. Then the item may be written and the release-key operatedagain to enable the carriage to run swiftly until the sixtieth tooth isarrested by the holding-dog, after which the amount may be written in.Thus in all succeeding lines of the bill the writing of the items willcoinmence at l5 and the writin g of the amounts at GO. Of course theremay be as many such teeth 92 as may be desired, and they may bevariously positioned, in accordance with the character of the work to beperformed. For the purpose of facilitating the setting of thecolumn-stop teeth the carriage is preferably graduated and numbered tocorrespond with the maehinescales and with the letter-spacing of thecarriage, as illustrated at Figs. l, 2, and l0. By combining theball-bearing carriage and the independently-movable feedteeth a light,easy-running, and noiseless carriage is produced.

To facilitate the return` IIO movements of the carriage, the holding andfeeding dogs are beveled or inclined on their tops.

W'hen the stops 49 are thrown in to operative position the carriage maybe fed two spaces at a time. Y

Various improvements herein shown, but not claimed, are claimed in myaforesaid prior applications.

Without departing from the spirit of my present invention numerouschanges may be made, and I desire to be understood as not limitingmyself altogether to a machine containing all of my variousimprovements, as some of them may be used without others and in amachine widely different in plan Vand design from that herein shown.

In my aforesaid other applications I have shown` and described and madeother and broader claims for various features set forth in thisapplication relating to the escapement mechanism and the carriagemounting, and hence I do not wish to be considered as dedicating orabandoning any features of invention disclosed herein and'which are madethe subjects-matter of my said other applications. The claims in thiscase are limited to features not shown in said other cases.

IVhat I claim as new, and desire to secure by Letters Patent, is-

l. In a type-writing machine, the combination of guide-bars havingball-.bearin gs, an

intermediate carriage having ball-bearings,-

antifriction-balls arranged on opposite sides of said carriage, and aball-holder connecting all of the antifriction-balls together.

2. In a type-writing machinefthe combination of guide-bars havingball-bearings, an intermediate carriage having ball-bearings,antifriction-balls arranged on opposite sides of said carriage, aball-holder connecting all of the antifriction-balls together, and aplatencarrier connected to said carriage.

3. In a type-writing machine, the combination of guide-bars havingball-bearings, an intermediate carriage having ball-bearings, twoantifriction-balls arranged on one side of said carriage and oneantifriction-ball arranged on the opposite side thereof, and aball-holder consisting of a longitudinal bar constructed to embrace thetwo antifrictionballs on one side and a transverse arm constructed toembrace the single antifrictionball on the opposite side ofsaidcarriage.

4. In atype-writing machine, the combination of guide-bars havingball-bearings, an intermediate carriage having ball-bearings,antifriction-balls, a ball-holder, and means for cooperating with saidball-holder to maintain it and the antifriction-balls in properrelationship to the carriage.

5. In a type-writing machine, the combination of fixed guide-bars havingball-bearings, an intermediate carriage having ball-bearings,antifriction-balls, a ball-holder for maintaining all of saidantifriction-balls in a fixed position relatively to one another, andlugs adapted to cooperate with said ball-holder to maintain it and theantifriction-balls in proper relationship to the carriage.

6. In a type-writing machine, the combination of iiXed guide-bars havingball-bearings, an intermediate carriage having ball-bearings,antifriction-balls, a ball-holder, and a lug on said carriage adapted tomove said ball-holder toward the right during the return movement of thecarriage in case the said ball-holder should lose its proper relativeposition to the carriage during the movement of the latter toward theleft.

'7. In a type-writing machine, the combination of fixed guide-barslhaving ball-bearings, an intermediate carriage having ball-bearings,antifriction-balls, a ball-holder, and a lug on said carriage adapted tomove the ball 'holder toward the left to adj ust it to proper positionrelatively to the carriage.

8. In a type-writing machine, the combination of iiXed guide-bars havingball-bearings, an intermediate carriage having ball-bearings,antifriction-balls, a ball-holder composed of a longitudinal bar and atransverse arm, and lugs arranged on said carriage to contact with saidarm and move the ballholder toward the right and the left.

9. In a type-writingmachine, the vcombination with a feed-rackcomprising a series of independently-movable feed-teeth, and suitabledogs to cooperate therewith, of a pressure and confining bar extendingthe entire length of said series of teeth and adapted to maintain themalways in proper working relation to the dogs and to also prevent theiraccidental detachment.

10. In a type-writing machine, the combination with a feed-rackcomprising a series of independently-movable teeth, and suitable dogs tocooperate therewith, of a springpressed bar covering the entire seriesof teeth.

ll. In a type-writing machine, the combination with a feed-rack having aseries of independently-movable teeth,and suitable dogs ,to cooperatetherewith, of an overlying bar forked at its ends to embrace ears risingfrom the feed-rack, and springs connected at their ends to said bar andto said ears.

l2. In a type-writing machine, the combination of a carriage having openhooks, a platen-carrier hinged thereto, and movable keepers operating toprevent accidental detachment of said platen-carrier.

13. In a type-writing machine, the combination of a carriage having openhooks, a platen-carrier hinged at its back rod to said hooks, andkeepers consisting of pivoted plates and depending fingers.

14E. In a type-writing machine, the combination of a carriage having aseries of independently-movable feed-teeth, suitable dogs tocoperatetherewith, a release-bar for simultaneously raising allot' said teeth,to free them from said dogs, the link 57, the pivoted arm 58, therocking crank-arm, 64:, a platen- IOO IIO

carrier connected to said carriage, and a keylever attached to saidplateinearrier and connected at its rear end to the depending free endofthe rocking crank-arm G4.

l5. In a type-ivriting machine, the combination with a ieedaaek having aseries of independently-inovable teeth, and suitable dogs to cooperatetherewith, of a rclease-bar arranged in notches in said teeth andadapted to simultaneously lift them all, the link 57, the arm 58, thesleeve 59, the pivot (50, the erank-arm Gl made as a continuation ofsaid pivot and connected at its free depending` end to the inner end ofa key-lever attached to a platen-carrier.

lll. In a type-writing machine, the combination with a feed-raekhavingaseries of independently-m ovable teeth, and suitable dogs to cooperatetherewith, of a release-bar a1'- ianged in notches in said teeth andadapted to simultaneously lift them all, the link 57, the arm 58, thesleeve 59, the pivot GO, the depending crank-arm Gl having a pin 65 anda head 7 (l, and a key-lever attached to a detachable platen-carrieiland provided at its inner end with a bloek having apassage-way 7 2 andthe seats 7 and 7l, arranged substantially as shown.

17. In a type-writing machine, the combination with a carriage havingopen hooks, a platen-carrier hinged thereto, a releasekey attached tosaid platen-carrier and having a block at its rear end formed with thepassageway 72, and the seats 7 3 and 74, the depending crank-arm Ul, arelease-bail connected thereto, and an overlying series ofindependently-movable feed-teeth mounted upon said carriage.

I8. In a typeswriting machine, the combination ot a carriage, aplaten-carrier detachably hinged thereto, a 1elease-key1neehanismconnected to said carriage and to said platen-carrier and separable onthe hin `:ge-line of the platen-earrier- Il). In a type-Writing machine,the combination of a carriage having a series of independently-movableteethhavingeach abody, lateral shoulders, depending legs and a notch orcutaway, and one or more of said teeth having also a vertical slot as91, and a bai' adapted to lift all of said teeth excepting the tooth orteeth having said slot 91.

20. In a type-Writing machine, a coluninstop tooth consisting of a body,lateral shoulders, depending legs, an intermediate notch or space, and aslot as 91.

2l. In a type-writing machine, the combi nation of a platen, aplaten-carrier, an en velop-gnide supported upon and adapted to slidelongitudinally of the round front rod ot said platen-carrier, and asupplemental rod attached to the said platen-rod and underlying the saidenvelop-guide to prevent any ro tation thereof.

Signed at Bridgeport, in the county of Fairfield and State ofConnecticut, this 24th day of September, A. D. 1891.

CHARLES W. WALK ER.. Witnesses:

Il'. M. RomNsoN, FAN-NY MeLAnEN.

